package tedu.api.thread;

import java.util.ArrayList;

public class Test {
    public static void main(String[] args) {
        ArrayList<Integer> list = new ArrayList<>();

        Thread t1 = new Thread(){
          public void run(){
              for(int i=0;i<1000;i++){
                  synchronized (list){//同步监视器对象通常可以选取临界资源(多个线程抢的对象)
                      list.add(i);
                  }

              }
          }
        };
        Thread t2 = new Thread(){
            public void run(){
                for(int i=0;i<1000;i++){
                    synchronized (list){
                        list.add(i);
                    }
                }
            }
        };
        t1.start();
        t2.start();

        try {
            Thread.sleep(1000);//阻塞主线程的目的是等待上述两个线程执行完毕
            System.out.println(list.size());
            System.out.println(list);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}
